"Yinghai Lu" <[email protected]> writes:
> On 5/12/07, Eric W. Biederman <[email protected]> wrote:
>> Overwriting the GDT should be fine because we don't reload the segments,
>> after we overwrite it. GDT entries are only read when we load segments.
>> Interrupts are disabled so that should not cause a problem.
>>
>> Why do you think the current behaviour is a problem?
>
> just think if GDT should not be overwriten when we are still under
> that GDT setting.
> didn't have chance to test that in HDT or other debug device, when
> setting breaking point after that GDT is overwriten.
It would be interesting to see if you could produce a failure using
that gdt, I don't think you will be able to, even with a debugger.
For data segments we never use that GDT, it is only for the code
segment we use the GDT and that only to get us into 64bit mode.
Eric
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
